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Finding the Fourth Proportional to 200,407.60, 300,469.02 and 100,495.72

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Solution

The fourth proportional to 200,407.60, 300,469.02 and 100,495.72 is: 150,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,407.60 : 300,469.02 = 100,495.72 : x
  2. Step 2: Convert to fraction form
    200,407.60/300,469.02 = 100,495.72/x
  3. Step 3: Cross multiply
    200,407.60x = 300,469.02 × 100,495.72
  4. Step 4: Simplify right side
    200,407.60x = 30,195,850,502.59
  5. Step 5: Solve for x
    x = 30,195,850,502.59/200,407.60
  6. Step 6: Final answer
    x = 150,672.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.